| Name | What | Region | Country | Lat | Long | Elev Ft. | Pop Est |
|---|
| Oari | city | Prefecture du Mayo-Kebbi | Chad | 9.1 | 14.5833333 | 1459 | 6500 |
| Ogdi | city | Prefecture du Mayo-Kebbi | Chad | 10.2833333 | 15.4666667 | 1036 | 6479 |
| Ogol | city | Prefecture du Mayo-Kebbi | Chad | 10.3666667 | 15.3 | 1020 | 7970 |
| Ogul | city | Prefecture du Mayo-Kebbi | Chad | 10.3666667 | 15.3 | 1020 | 7970 |
| Oindaga | city | Prefecture du Mayo-Kebbi | Chad | 8.8666667 | 14.8666667 | 1430 | 5926 |
| Oingeloba | city | Prefecture du Mayo-Kebbi | Chad | 8.9 | 14.9 | 1541 | 6501 |
| Oingéloba | city | Prefecture du Mayo-Kebbi | Chad | 8.9 | 14.9 | 1541 | 6501 |
| Orbogo | city | Prefecture du Mayo-Kebbi | Chad | 10.3 | 15.9833333 | 1059 | 6473 |
| Orobogo | city | Prefecture du Mayo-Kebbi | Chad | 10.3 | 16.1 | 1036 | 5624 |
| Ouadam | city | Prefecture du Mayo-Kebbi | Chad | 10.7166667 | 15.2666667 | 977 | 6468 |
| Ouadang | city | Prefecture du Mayo-Kebbi | Chad | 10.6666667 | 15.15 | 971 | 8161 |
| Ouagoue | city | Prefecture du Mayo-Kebbi | Chad | 9.1833333 | 14.6833333 | 1358 | 6497 |
| Ouagoué | city | Prefecture du Mayo-Kebbi | Chad | 9.1833333 | 14.6833333 | 1358 | 6497 |
| Ouahi | city | Prefecture du Mayo-Kebbi | Chad | 11.0666667 | 15.25 | 967 | 6459 |
| Ouala | city | Prefecture du Mayo-Kebbi | Chad | 10.8666667 | 15.1 | 961 | 7676 |
| Oualdda | city | Prefecture du Mayo-Kebbi | Chad | 9.9666667 | 15.2166667 | 1026 | 8548 |
| Ouale Iaso | city | Prefecture du Mayo-Kebbi | Chad | 10.6666667 | 15.55 | 987 | 6468 |
| Ouale Iasso | city | Prefecture du Mayo-Kebbi | Chad | 10.6666667 | 15.55 | 987 | 6468 |
| Ouale Yasso | city | Prefecture du Mayo-Kebbi | Chad | 10.6666667 | 15.55 | 987 | 6468 |
| Oualé Iaso | city | Prefecture du Mayo-Kebbi | Chad | 10.6666667 | 15.55 | 987 | 6468 |
| Oualé Iasso | city | Prefecture du Mayo-Kebbi | Chad | 10.6666667 | 15.55 | 987 | 6468 |
| Oualé Yasso | city | Prefecture du Mayo-Kebbi | Chad | 10.6666667 | 15.55 | 987 | 6468 |
| Ouaye | city | Prefecture du Mayo-Kebbi | Chad | 11.1 | 15.2 | 980 | 6411 |
| Ouedda | city | Prefecture du Mayo-Kebbi | Chad | 9.9666667 | 15.2166667 | 1026 | 8548 |
| Oueyna | city | Prefecture du Mayo-Kebbi | Chad | 10.2333333 | 15.6166667 | 1046 | 6479 |
| Oueyna | city | Prefecture du Mayo-Kebbi | Chad | 10.1333333 | 15.7 | 1040 | 6482 |
| Ouhanina | city | Prefecture du Mayo-Kebbi | Chad | 10.5166667 | 15.9333333 | 1023 | 6473 |
| Oulai Loko | city | Prefecture du Mayo-Kebbi | Chad | 10.5333333 | 15.6666667 | 1003 | 6473 |
| Oulam | city | Prefecture du Mayo-Kebbi | Chad | 10.7333333 | 15.3833333 | 974 | 6468 |
| Oulargo | city | Prefecture du Mayo-Kebbi | Chad | 9.7833333 | 15 | 1755 | 6487 |
| Oulaï Loko | city | Prefecture du Mayo-Kebbi | Chad | 10.5333333 | 15.6666667 | 1003 | 6473 |
| Oulmade | city | Prefecture du Mayo-Kebbi | Chad | 8.85 | 15.35 | 1476 | 6741 |
| Oulmadé | city | Prefecture du Mayo-Kebbi | Chad | 8.85 | 15.35 | 1476 | 6741 |
| Oulou | city | Prefecture du Mayo-Kebbi | Chad | 10.7166667 | 15.1833333 | 987 | 6554 |
| Ouloukou | city | Prefecture du Mayo-Kebbi | Chad | 9.1166667 | 14.7833333 | 1427 | 6501 |
| Oumri | city | Prefecture du Mayo-Kebbi | Chad | 9.45 | 14.7833333 | 1266 | 6496 |
| Ouoko | city | Prefecture du Mayo-Kebbi | Chad | 10.9 | 15.6666667 | 915 | 3409 |
| Ourey | city | Prefecture du Mayo-Kebbi | Chad | 9.9 | 14.25 | 1092 | 6486 |
| Ourkila | city | Prefecture du Mayo-Kebbi | Chad | 10.6666667 | 15.2333333 | 974 | 6468 |
| Ourlargo | city | Prefecture du Mayo-Kebbi | Chad | 9.7833333 | 15 | 1755 | 6487 |
| Ourlargo | city | Prefecture du Mayo-Kebbi | Chad | 9.8 | 15 | 1696 | 6487 |
| Ouro Mal Souley | city | Prefecture du Mayo-Kebbi | Chad | 9.1 | 14.4833333 | 1328 | 4134 |
| Ourombal | city | Prefecture du Mayo-Kebbi | Chad | 9.8666667 | 15.8 | 1099 | 6487 |
| Ouroul Oua | city | Prefecture du Mayo-Kebbi | Chad | 10.9166667 | 15.4833333 | 964 | 6360 |
| Ouroumbar | city | Prefecture du Mayo-Kebbi | Chad | 9.8666667 | 15.8 | 1099 | 6487 |
| Outia | city | Prefecture du Mayo-Kebbi | Chad | 9.1833333 | 14.3666667 | 971 | 1694 |
|
|